selection of parameters by genetic algorithm

Hi to all, I have been studying on a optimization problem. My aim is selecting of parameters and assiging them to some other parameters. More detailly, I have 16 material properties, and I should select 8 properties from these 16 parameters each time and assing them to the strucutre. This process will continue until obtaining the best 8 couple. I have done to assign 8 parameters to the strucuture. However, ı am stuck at selection of 8 parameters and looping this process by genetic algorithm (ga).Thank you.

Answer 1

[Alan Weiss]

I think that you should use Mixed Integer ga Optimization. Create a binary variable x with 16 components. Create the linear constraints

A = [ones(1,16);-ones(1,16)];
b = [8.5;-7.5];

which mean sum(x) <= 8.5 and -sum(x) <= -7.5 or equivalently sum(x) >= 7.5. This should keep the sum of elements in x at exactly 8.

Good luck,

Alan Weiss

MATLAB mathematical toolbox documentation

Answer 2

[Mirhan]

Thank you for your time sir.